Home / 5,621.74-8,431.98-2,156.56

Finding the Fourth Proportional to 5,621.74, 8,431.98 and 2,156.56

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Solution

The fourth proportional to 5,621.74, 8,431.98 and 2,156.56 is: 3,234.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,621.74 : 8,431.98 = 2,156.56 : x
  2. Step 2: Convert to fraction form
    5,621.74/8,431.98 = 2,156.56/x
  3. Step 3: Cross multiply
    5,621.74x = 8,431.98 × 2,156.56
  4. Step 4: Simplify right side
    5,621.74x = 18,184,070.79
  5. Step 5: Solve for x
    x = 18,184,070.79/5,621.74
  6. Step 6: Final answer
    x = 3,234.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.